To add credits to your account, go to the "Wallet" tab or click the "Add Credits" button in the top right corner. From there, simply enter the required information and select your preferred payment method.

Please note that credits are converted at a rate of $1 = 100 credits.

If you have a promo code, you can head to the "Wallet" tab, click on "Add Free Promo Credits", and enter your promo code to receive your credits.

Here is more information about the credits: https://faq.bullrush.com/what-is-the-difference-between-bullrush-credits-and-promo-credits